mirror of
https://github.com/pmmp/PocketMine-MP.git
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4b9a142a5d
This is better for performance because these then don't need to be reevaluated every time they are called. When encountering an unqualified function or constant reference, PHP will first try to locate a symbol in the current namespace by that name, and then fall back to the global namespace. This short-circuits the check, which has substantial performance effects in some cases - in particular, ord(), chr() and strlen() show ~1500x faster calls when they are fully qualified. However, this doesn't mean that PM is getting a massive amount faster. In real world terms, this translates to about 10-15% performance improvement. But before anyone gets excited, you should know that the CodeOptimizer in the PreProcessor repo has been applying fully-qualified symbol optimizations to Jenkins builds for years, which is one of the reasons why Jenkins builds have better performance than home-built or source installations. We're choosing to do this for the sake of future SafePHP integration and also to be able to get rid of the buggy CodeOptimizer, so that phar and source are more consistent.
111 lines
2.5 KiB
PHP
111 lines
2.5 KiB
PHP
<?php
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/*
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*
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* ____ _ _ __ __ _ __ __ ____
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* | _ \ ___ ___| | _____| |_| \/ (_)_ __ ___ | \/ | _ \
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* | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
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* | __/ (_) | (__| < __/ |_| | | | | | | | __/_____| | | | __/
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* |_| \___/ \___|_|\_\___|\__|_| |_|_|_| |_|\___| |_| |_|_|
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* @author PocketMine Team
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* @link http://www.pocketmine.net/
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*
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*
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*/
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declare(strict_types=1);
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namespace pocketmine\item;
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use pocketmine\item\enchantment\Enchantment;
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use pocketmine\nbt\tag\ByteTag;
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use function lcg_value;
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use function min;
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abstract class Durable extends Item{
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/**
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* Returns whether this item will take damage when used.
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* @return bool
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*/
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public function isUnbreakable() : bool{
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return $this->getNamedTag()->getByte("Unbreakable", 0) !== 0;
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}
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/**
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* Sets whether the item will take damage when used.
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*
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* @param bool $value
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*/
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public function setUnbreakable(bool $value = true){
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$this->setNamedTagEntry(new ByteTag("Unbreakable", $value ? 1 : 0));
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}
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/**
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* Applies damage to the item.
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*
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* @param int $amount
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*
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* @return bool if any damage was applied to the item
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*/
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public function applyDamage(int $amount) : bool{
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if($this->isUnbreakable() or $this->isBroken()){
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return false;
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}
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$amount -= $this->getUnbreakingDamageReduction($amount);
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$this->meta = min($this->meta + $amount, $this->getMaxDurability());
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if($this->isBroken()){
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$this->onBroken();
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}
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return true;
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}
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protected function getUnbreakingDamageReduction(int $amount) : int{
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if(($unbreakingLevel = $this->getEnchantmentLevel(Enchantment::UNBREAKING)) > 0){
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$negated = 0;
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$chance = 1 / ($unbreakingLevel + 1);
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for($i = 0; $i < $amount; ++$i){
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if(lcg_value() > $chance){
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$negated++;
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}
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}
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return $negated;
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}
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return 0;
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}
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/**
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* Called when the item's damage exceeds its maximum durability.
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*/
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protected function onBroken() : void{
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$this->pop();
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}
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/**
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* Returns the maximum amount of damage this item can take before it breaks.
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*
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* @return int
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*/
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abstract public function getMaxDurability() : int;
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/**
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* Returns whether the item is broken.
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* @return bool
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*/
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public function isBroken() : bool{
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return $this->meta >= $this->getMaxDurability();
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}
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}
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